CAGE OF ROLLING BEARING AND ROLLING BEARING

• Main Authors: TSUJI NAOAKI, ISHIDA HIKARI, ITO CHIHARU
• Format: Patent
• Language: English; Japanese
• Published: 01.11.2021
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a cage of a rolling bearing which can suppress noise resulting from the cage, and the rolling bearing.SOLUTION: In a cage 6 of a rolling bearing, pockets 12 for holding balls 5 are formed at a plurality of points of an annular body 10 in a circumferential direction. A guide clearance δ1 at an outside diameter side in a radial direction including a center of the pocket 12 being a clearance of the annular body 10 in the radial direction between an opening edge 10a of the pocket of the annular body 10 at an external peripheral face side and the ball 5, in a cross section which is cut by a plane vertical to a cage axial core, is 1 to 2% of a diameter d5 of the ball 5. A guide clearance δ2 at an inside diameter side in the radial direction being a clearance of the annular body 10 in the radial direction between an opening edge 10b of the pocket of the annular body 10 at an internal peripheral face side and the ball 5 is equal to 1.5 times or larger of the guide clearance δ1 at the outside diameter side in the radial direction. A band width H being a dimension of the annular body 10 in the radial direction is 40 to 45% of the diameter d5 of the ball 5.SELECTED DRAWING: Figure 4 【課題】保持器に起因する異音を抑制することができる転がり軸受の保持器および転がり軸受を提供する。【解決手段】この転がり軸受の保持器６は、環状体１０の円周方向複数箇所に玉５を保持するポケット１２が形成されている。ポケット１２の中心を含み保持器軸心に垂直な平面で切断した断面内における、環状体１０の外周面側のポケットの開口縁１０ａと玉５との環状体１０の径方向のすきまである外径側の径方向案内すきまδ１が、玉５の直径ｄ５の１〜２％である。環状体１０の内周面側のポケットの開口縁１０ｂと玉５との環状体１０の径方向のすきまである内径側の径方向案内すきまδ２が、外径側の径方向案内すきまδ１の１．５倍以上である。環状体１０の径方向寸法である帯幅Ｈが玉５の直径ｄ５の４０〜４５％である。【選択図】図４